Under the service, which went live in India, a user can click on the special icon on the site when she is either in a wi-fi zone or a place with good data connectivity, and download a video which can be watched later.

The downloaded videos can be watched as many times within 48 hours and the advertiser's interests have been protected through an innovation wherein the advertisement appears before a playback of the video, like it would for online usage.

The US-based internet advertising giant said a large number of videos are already available and the company is speaking to more content partners to opt for this service.

Once the device connects back to the internet, analytics around the number of times the video was watched will be transfered to the YouTube servers.

It can be noted that already, there are a slew of applications available online which let users download videos to be watched offline, but Google India's managing director Rajan Anandan stressed that this is illegal and amounts to piracy of content.

About the need for such a service, he said the mobiles growth has resulted in a situation where we have a large user base, which is estimated to touch 300 million by year-end, but India is "starved" for bandwidth while the data plans are also costly, making it tough to watch videos seamlessly.

"There will not be any difficulties around buffering if you use this service," he added.

At present, YouTube has 60 million users in the country, while on the content front, there are 10,000 Indian films, 20,000 TV shows and 2.5 lakh songs which are available online, the company said.